I think I have it!
This guy has exactly the same Chrome issue with xf86-video-intel.
This post said all I need to do to change to modesetting is to uninstall xf86-video-intel
So I did that and Chrome and Electron apps all worked but my bars were not there and my monitors werent arranged properly, so I ran xrandr and saw that now my two monitors are identified by eDP-1 and HDMI-1 with the modesetting driver whereas they were eDP1 and HDMI1 previously with the Intel driver.
I simply just changed these in my xrandr command in .xprofile and my i3 config bar lines (and WS allocations etc) and …
all seems to be working 
PS, my GPU:
leigh@T16-AL ~ % lspci -nn |grep -Ei 'VGA|DISPLAY'
00:02.0 VGA compatible controller [0300]: Intel Corporation Alder Lake-UP3 GT2 [UHD Graphics] [8086:4628] (rev 0c)
Looking up 4268 on Intel GPU page:
4626, 4628, 462A, 46A0, 46A1, 46A2, 46A3, 46A6, 46A8, 46AA, 46B0, 46B1, 46B2, 46B3, 46C0, 46C1, 46C2, 46C3
Intel® UHD Graphics
Xe
Adler Lake